Iguana parsing framework: Iguana Iguana is a parsing framework based on data-dependent grammars. Data-dependent grammars extend context free grammars with arbitrary computation, variable binding, and constraints. These powerful features enable construction of parsers for context-sensitive languages. We also use data-dependent grammars as a layer to implement different disambiguation constructs such as operator precedence.
Meerkat Parser Combinators: Meerkat is a general parser combinator library written in Scala, that combines the flexibility of traditional, monadic parser combinators and the expressivity and worst-case performance guarantees of state-of-the-art general parsing algorithms, such as GLL and GLR. Using the Meerkat library, it is possible to directly encode any context-free grammar, including the ones with direct and indirect left recursion, in Scala. Meerkat parsers support ambiguity, by producing a parse forest in cubic time and space, and can behave nearly linear on grammars of real programming languages.